A(n)=a+(n-1)d
A(40)= -1+(40-1)-4
A(40)= -1+39(-4)
A(40)= -1+(-156)
A(40)= -157
60 miles would be the total miles in the trip
Hey there,
<span>Summarize categorical data for two categories in two-way frequency tables. Interpret relative frequencies in the context of the data (including joint, marginal, and conditional relative frequencies). Recognize possible associations and trends in the data.
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Answer:
Step-by-step explanation:
A proportion could be used.
With 2 parts of compost and 6 parts potting soil, you would end up with 8 total parts.
So it can be written as a ratio of compost to total mix, or 
The problem states 10 kg are needed in total, and the variable would be the amount of compost
As a ratio it would be
.
Use the ratios to write a proportion.

Multiply both sides of the equation by 10

Convert to a decimal if desired.

First combine like terms.
7+9=16
16+p=17
Subtract 16 from both sides of the equation.
16-16+p=17-16
p=1
You can check to see if the solution is true by substituting 1 into the original equation.
7+1+9=17
17=17